Warning, version 310 is not yet complete; most version-specific features are present, but some are missing.
ERROR: 0:9: '#error' : This should show up in pp output .  
ERROR: 0:14: '#' : invalid directive: def
ERROR: 0:15: 'preprocessor evaluation' : undefined macro in expression not allowed in es profile Y
ERROR: 0:21: '' : missing #endif 
ERROR: 4 compilation errors.  No code generated.